CNN New Day With Alisyn Camerota and John Berman October 1, 2019 11:55:00
Your lungs. >> reporter: you sort of super heat the chemicals with the heavy coils and atomize it. and accumulate or recongeal. i don't know what that does to the body. just like they didn't know what cigarettes did the body when they first came out. does that part of it worry you? >> so, it worries me for sure because we don't know the long-term effects but it doesn't worry me for smokers. >> reporter: dr. michael siegel is a professor of health at boston university. >> it doesn't worry he for smokers because i now 1 out of 2 of them is going to die from smoking if they continue to smoke. >> ...